To explore the origin of dragon, the symbol of Cathay civilization, is highly challenging.

探究华夏文明象征之龙的起源问题，是一个极富挑战性的难题。

youdao

To explore the origin of dragon, the symbol of Cathay civilization, is highly challenging.

探究华夏文明象征之龙的起源问题，是一个极富挑战性的难题。

youdao